Walking mechanism



June 27, 1939. PAGE 2,164,120

WALKING MECHANISM Filed Dec. 14, 1958 4 Sheets-Sheet 1 June 27, 1939. ,J. w. PAGE 2,164,120

WALKING MECHANISM Filed Dec. 14, 1938 4 Sheets-Sheet 2 Jwwfiza; 175%]? w Fr J. w. PAGE WALKING MECHANISM June 27, 1939.

Filed Dec. 14, 1938 4 Sheets-Sheet 5 IIIH 4 Sheets-Sheet 4 Filed Dec.

illlllll Mk fa Patented June 27, 1939 T UNITED STATES'IPATENT OFFICE WALKING MECHANISM John W.. Page, Chicago, 111., assignor to Page Engineering Company, Chicago, Ill.

Application December 14, 1938, Serial No. 245,734

3 Claims. (01. 1808) This invention relates to improvements in as it forms no part of the present'invention. As walking mechanism and more especially such here shown, the superstructure includes the two mechanism adapted for use in connection with longitudinal trusses indicated in general by M, excavating, digging and material handling and I4. These trusses carry transverse members such 5 driving machinery and apparatus, such as, for as indicated by l5, IS on which the machinery 01'5",

example, dredges, diggers, dragline buckets, machinery supporting platform (not shown) may scrapers, pile-drivers, and other devices using be mounted by any suitable means. heavymachinery. At the sides of the longitudinal trusses l4, M

The invention pertains particularly to the areprovided detachable structural steel frames walking mechanism of such devices equipped with or Outriggers I6, I6 which carry the outer bearin a transverse driving shaft operating propelling ings for the transverse driving shaft. The outmembers at the sides thereof. For the purpose of riggers are made detachable (by means not illustrating the invention I have here shown it shown) to permit their ready removal; and the embodied in a mechanism propelled by vertically center portion may be made narrow enough to slidable and swingable legs at the sides as dispermit of its being loaded on a flat car for trans it;

closed in my copending application, Serial No. portation. To prepare the apparatus for ship- 84,205, filed June 8, 1936. ment, after the legs are removed, the outer sec- Among the features of my invention is the tions of the shaft may be readily withdrawn from provision of a jointed shaft with two inside bearthe sides and the outriggers removed.

0 ings mounted in the longitudinal trusses carry- The propelling means or legs are shown in Figs. ing the supports for the machinery or machinery 7, 8 and 9 but these need not be described in platform and two outside bearings carried by detail because their construction and operation structural steel Outriggers. The shaft comprises is fully explained in my copending application three sections with adjacent ends splined into referred to above. It will suffice to say that there the rotatable bearing rings to connect them nonis provided at each side a vertical leg I! slidably 25 rotatively. The stationary bearing rings are split and swingably mounted on the pivot pin l8 carto permit their removal. The outer shaft porried by the superstructure. Each leg carries a tions can be readily withdrawn from the sides foot or auxiliary base I9 at its lower end. At for replacement and repair purposes and to aid the end of the driving shaft is acrank 20 with a in preparing the apparatus for shipment. crank pin 2| operating through the link 22 to 30 Other features and advantages of my invenraise and lower the leg. The crank carries a section will appear more fully as I proceed with my and crank pin 23 on a slightly longer radius servspecification. ing to swing the leg on its pivotal connection 24 In that form of device embodying the features to the link at the upper end. By this construc- 5 of my invention shown in the accompanying tion, rotation of the shaft serves alternately to drawings, 1 is a View in Side elevation; 2 raise, lower and advance the legs and main base. is a View in front elevation; Fig. 3 is a view taken Th legs t together. as indicated by the in 3 o Fi 4 is The driving shaft comprises a center section 25 View taken as indicated by the line 4 of 31 and two outer sections 25a, 25a. The shaft may 5 is a View taken as Indicated by the line be driven in any suitable manner as by means of 40 5 of F 3; F 6 is View: taken inlicated by a pinion 26 mounted on the center section. h lme 6 of 3; 7 1s V1ew.m Side elevaf Each of the longitudinal trusses l4 supports a p one legs R g g fi i bearing including an outer stationary ring 21 3? 35% g g g x gfi 3 225 carrying an inner rotatable ring 28 in which the by th e 11539 of 8 adjacent ends of the inner and outer shaft sections are splined by means of the splines 39. This As Shown m the drawmgs the devlce com serves to connect the shaft sections non-rotaprises in general a circular main base lo upon t l and give the entire shaft bearing supports r r r 's rotatabl mounted lvey whlch the Supe St uctu e l y in the trusses I4, I l. The outer shaft sections find b means of the usual circular tracks II and I2 50 afid rollers i3. 7 bearing supports for their outer ends in the bear- The superstructure includes in general suitas a ed by the Outrlggers W ble trusses and bridge work to form a support The outer stationary parts 21a and 29a of the for the machinery to be carried by the walking bearings 21 and 29, respectively, are split (see mechanism. Such machinery is not shown here Figs. 4 and 5) and bolted to the web plates of the 55 truss l4 and outrigger I6, respectively, to permit their ready removal.

Lateral movement of the shaft is prevented by the outer bearings at the crank ends. After loosening or removing the outer bearings or outriggers the outer shaft sections can be simply withdrawn from the splined bearing rings 28, 28, without disturbing the bearings.

While there are shown and described certain embodiments of the invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims, in which it is intended to claim all novelty inherent in the invention as broadly as permissible, in View of the prior art.

What I claim as new, and desire to secure by Letters Patent, is:

1. Apparatus of the character described, ineluding: a main base; a machinery supporting superstructure mounted thereon with longitudinal trusses; propelling members at the sides of the apparatus; a transverse driving shaft for the propelling members, said shaft having bearings in the longitudinal trusses; and outriggers carried by the superstructure having bearings for the outer ends of the driving shaft.

2. Apparatus of the character described, in-

cluding: a main base; a machinery supporting superstructure mounted thereon with longitudinal trusses; propelling members at the sides of the apparatus; a sectional transverse driving shaft for the propelling members comprising a central section with its ends mounted in bearings in the longitudinal trusses and outer sections with their inner ends mounted in said bearings and nonrotatively connected to said central section; and outriggers carried by the superstructure having bearings for the outer ends of the outer sections of the driving shaft.

3. Apparatus of the character described, including: a main base; a machinery supporting superstructure mounted thereon with longitudinal trusses; propelling members at the sides of the apparatus; and a sectional transverse driving shaft for the propelling members comprising a central section with its ends mounted in bearings in the longitudinal trusses and outer sections with their inner ends mounted in said bearings and non-rotatively connected to said central section, the non-rotative connections between the shaft sections being accomplished by non-rotatively mounting the adjacent ends of the shaft sections in rotatable members of the bearings in the longitudinal trusses.

JOHN W. PAGE. 

